Shouldn't the runs in NoAbility also appear in Any%? Some of the NoAbility runs rank quite high in Any%, and technically, using no abilities falls under the requirements of Any%

Technically yes, but it is up to the runners of no ability to decide if they want to submit their times to the Any% leaderboard.

I guess - I just feel like it should do it automatically, but I guess that's on 'speedrun.com's side - Didn't think about that. Not sure if NoAbility runners know that they can submit it to both :p

"Any abilities may be used" surely must mean you can chose none if you so desire.

Yes, NoAbility runs are eligible for any% runs. However they tend to be slower, so if someone has run both, their slower no ability run will not show under any% as the leader board only shows their fastest time per category.

The top 4 people in NoAbility do not have an any% run though.

Yep, and their runs could be submitted for any%.

Yeah, as I said, I think it should automatically submit to both categories, but that's on the web-developer's side I guess.